Final answer:
A "state of equality" refers to the concept of treating people the same and without discrimination based on their beliefs, nationalities, cultures, or backgrounds, which includes the idea of equal rights, privileges, and responsibilities.
Step-by-step explanation:
A "state of equality" as described in the text refers to the concept of treating people the same and without discrimination based on their beliefs, nationalities, cultures, or backgrounds. This includes the idea of equal rights, privileges, and responsibilities within a society. Therefore, the correct answer is d) Equality of rights.